KR101633741B1 - Rotary table using the direct driver motor - Google Patents

Rotary table using the direct driver motor Download PDF

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Publication number
KR101633741B1
KR101633741B1 KR1020150110897A KR20150110897A KR101633741B1 KR 101633741 B1 KR101633741 B1 KR 101633741B1 KR 1020150110897 A KR1020150110897 A KR 1020150110897A KR 20150110897 A KR20150110897 A KR 20150110897A KR 101633741 B1 KR101633741 B1 KR 101633741B1
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KR
South Korea
Prior art keywords
motor
rotary table
direct
shaft
coupled
Prior art date
Application number
KR1020150110897A
Other languages
Korean (ko)
Inventor
이현우
이준두
김종찬
Original Assignee
(주)유지인트
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Publication date
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Priority to KR1020150110897A priority Critical patent/KR101633741B1/en
Application granted granted Critical
Publication of KR101633741B1 publication Critical patent/KR101633741B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/04—Indexing equipment having intermediate members, e.g. pawls, for locking the relatively movable parts in the indexed position
    • B23Q16/06—Rotary indexing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
    • B23Q16/10—Rotary indexing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2716/00—Equipment for precise positioning of tool or work into particular locations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Machine Tool Units (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The present invention relates to a rotary table (1000) using a direct driver (DD) motor (400). More specifically, the rotary table (1000) can be separately stacked in a vertical direction to easily mount various workpieces, thereby being applicable to a flexible production system. The rotary table (1000) includes a DD motor (400) with a high torque to respond to the processing load without a separate brake device.

Description

[0001] The present invention relates to a rotary table using a direct-coupled motor (DD motor)

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rotary table using a direct-coupled motor (DD motor), and more particularly, to a rotary table in which a table is stacked up and down to be removable, The present invention relates to a device capable of coping with a machining load without a separate brake device.

BACKGROUND ART A rotary table apparatus for rotating and dividing a workpiece into machine tools such as a milling machine, a grinding machine, or an NC boring machine has been widely applied. A rotary table device is a device that allows a complex workpiece to be machined into a single setting while rotating the workpiece.

As an example of this, a base 100 installed on a machine tool as in Korean Patent No. 10-1456304 ("a drive device of a rotary table") shown in Fig. 1, A ring gear 35 disposed below the rotary table 30 and concentrically with the center of rotation of the rotary table 30, a drive motor 35 mounted on one side of the base 100 for generating power, (110), a base (100) rotatably mounted on the base (100), a drive shaft (110) having an end connected to the drive shaft, a first gear A coupling 140 that is coupled to the first end 126 of the first shaft 120 and a second end 136 that is rotatably mounted to the base 100 and that is coupled to the coupling 140 A second shaft 130 coupled with a second gear that is coupled to one side and transmits power to the first shaft, Bringing comprises power transmission means for transmitting power to the ring gear (35).

Such a prior art document has a problem that it is difficult to solve the problem of backlash and precision in a belt, a gear, or the like because the structure of rotating the rotary table by transmitting the power of the motor to the rotary table through a belt or a gear is applied.

In addition, the rotary table, such as the prior literature, is subject to friction or wear, which results in lower accuracy and lifetime as time goes on, as well as heat dissipation due to noise and heat generated by friction. There is an overall problem followed.

Korean Patent No. 10-1456304 (Published date June 27, 2012)

SUMMARY OF THE INVENTION The present invention has been made to overcome the above problems, and it is an object of the present invention to provide a high-torque DD motor which can be applied to a flexible production system by easily mounting various workpieces, (DD motor) capable of coping with a machining load even without a separate brake device.

A rotary table using a direct-coupled motor (DD motor) according to an embodiment of the present invention includes a first table on which a workpiece is mounted and rotatable; A second table provided below the first table and detachable from the first table; A shaft connected to a lower portion of the first table and the second table to rotate; A motor provided on an outer periphery of the shaft for rotating the shaft; And an encoder provided under the motor and controlling the phases of the first table and the second table.

The first table is characterized in that a plurality of T-grooves are formed on the upper surface of the first table.

The upper and lower portions of the shaft are supported by a bearing.

Further, the shaft has a hollow shape inside.

Further, the motor is characterized in that a direct-coupled direct-current motor (DD motor) is used.

Further, the outer periphery of the motor is provided with an annular cooler jacket 410.

The rotary table using the direct-coupled motor (DD motor) according to the present invention constructed as above can be applied to a flexible production system since it is easy to mount various workpieces by allowing the table to be stacked vertically, Since the DD motor of the present invention is provided, it is possible to cope with a machining load without a separate brake device, thereby reducing the cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the configuration of a driving apparatus for a rotary table according to an embodiment of the present invention; FIG.
2 is a perspective view of a vertical machining center including a rotary table using a direct-coupled motor (DD motor) according to an embodiment of the present invention;
3 is a perspective view of a rotary table using a direct-coupled motor (DD motor) according to an embodiment of the present invention.
4 is a sectional view of a rotary table using a direct-coupled motor (DD motor) according to an embodiment of the present invention.
5 is a plan view of a rotary table using a direct-coupled motor (DD motor) according to an embodiment of the present invention.

A rotary table 1000 using a direct drive motor (DD motor 400) according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings. The following drawings are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the following drawings, but may be embodied in other forms. In addition, like reference numerals designate like elements throughout the specification.

In this case, unless otherwise defined, technical terms and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the following description and the accompanying drawings, A description of known functions and configurations that may unnecessarily obscure the description of the present invention will be omitted.

2 is a perspective view of a vertical machining center including a rotary table using a direct-coupled motor (DD motor) according to an embodiment of the present invention.

FIG. 3 is a perspective view of a rotary table 1000 using a DD motor 400 according to an embodiment of the present invention. FIG. 4 is a perspective view of a rotary table 1000 using a DD motor 400 according to an embodiment of the present invention. 5 is a plan view of the rotary table 1000 using the DD motor 400 according to an embodiment of the present invention.

Referring to FIGS. 2, 3 and 4, a rotary table 1000 provided on a base of a vertical machining center, in which a DD motor 400 is used, includes a first table 100 on which a workpiece is mounted, ; A second table 200 provided below the first table 100 and detachable from the first table 100; A shaft 300 connected to a lower portion of the first table 100 and the second table 200 so as to rotate; A motor 400 provided at the outer periphery of the shaft 300 to rotate the shaft 300; And an encoder 500 disposed under the motor 400 and controlling the phases of the first table 100 and the second table 200. [

To be more specific, the rotary table 1000 can be bolted to the second table 200 under the first table 100.

In addition, a rotary table housing 70 may be provided outside the lower end of the second table 200.

Referring to FIG. 4, a plurality of T-grooves 110 may be formed on the first table 100, and a jig or a tool may be mounted on the first table 100.

In addition, the first table 100 and the second table 200 can be separated, so that the size and thickness of the first table 100 can be changed flexibly according to the shape of the work according to the request of the customer and used .

In addition, when the height of the workpiece is high, the first table 100 can be disassembled and the second table 200 can be mounted.

The lower end of the first table 100 is formed with a groove at the center thereof so that the shaft 300 can be fitted and engaged. The center of the second table 200 is penetrated to allow the shaft 300 to pass therethrough .

The lower end of the second table 200 is provided with a first bearing 10 on which a cross roller bearing can be used and the outer and inner sides of the first and second bearing housings 40, And a second bearing housing (50), respectively, and can be bolted to the second table (200).

At this time, the second bearing housing 50 may be in close contact with the outer circumference of the shaft 300.

The lower end of the second bearing housing 50 is provided with a motor 400, which can be bolted to the outer periphery of the shaft 300.

The upper and lower ends of the motor 400 are provided with a second bearing 20 and a third bearing 30, and according to an embodiment of the present invention, a radial ball bearing is used and the second bearing 20 And the second bearing housing 50 is provided on the outer side of the first bearing 10 so that the second bearing 20 can be supported together with the first bearing 10.

The third bearing 30 is provided on the outer side of the third bearing housing 60 to support the third bearing 30 and the motor 400 from below.

The lower end of the motor 400 may be provided with the encoder 500 and the encoder 500 may be bolted to the encoder 500 so that the encoder 500 may be fixed to the shaft 300 .

In addition, a rotary table housing 70 may be provided on the outer side from the lower end of the second table 200 to the encoder 500.

Further, the motor 400 may be a DD motor 400.

By using the DD motor 400, the rotary table 1000 minimizes the size of the rotary table 1000 as gears are unnecessary, and makes it possible to perform precision machining with less generation of noise and vibration.

The rotary table 1000 using the DD motor 400 may be installed to be rotatable on the base of the vertical machining center.

The DD motor 400 may have a rotor 400a on its inner side and a stator 400b on its outer side.

In addition, the rotary table 1000 according to an embodiment of the present invention may be rotated based on a polar coordinate value.

Here, the C axis means a reference axis for displaying angles in polar coordinates. The CY coordinate means a polar coordinate.

At this time, the rotary table 1000 according to an embodiment of the present invention may mean a C-axis table of the vertical machining center.

More specifically, the workpiece can be mounted on the C-axis table. The C-axis table becomes the rotary table 1000 and the X-axis coordinate is controlled by the CY-axis synchronous pole-coordinate system automatic conversion program, whereby the C-axis table is set by the DD motor 400 provided therein, .

In addition, the shaft 300 may have a hollow shape.

When hydraulic and pneumatic pressures are required in the rotary table 1000, it can be used as a passage for inserting electric wires and hoses when machining a workpiece.

In addition, the outer periphery of the motor 400 may be provided with an annular cooler jacket 410.

The outer circumference of the stator 400b may be machined to form a groove of a predetermined thickness.

The cooler jacket 410 may include an inlet 71 at a lower end of one side of the rotary table housing 70 and an outlet 72 at a lower side of the other side of the rotary table housing 70 .

At this time, the cooler jacket 410 repeats that the gas or fluid flows into the inlet 71 and is discharged to the outlet 72 so that the gas or the fluid is circulated in the outer circumferential groove of the stator 400b Thereby cooling the discharge heat of the motor 400.

Here, the cooler jacket 410 according to an embodiment of the present invention may use oil.

The cooler jacket 410 may be disposed between the inner circumference of the rotary table housing 70 and the outer circumference of the stator 400b.

At this time, the cooler jacket 410 is disposed above and below the cooler jacket 410 to prevent oil from leaking between the inner circumference of the rotary table housing 70 and the outer circumference of the stator 400b. Ring (O-ring) 411 may be provided.

The O-ring 411 is fitted into a groove formed in the inner periphery of the rotary table housing 70 and can be closely attached to the outer circumference of the stator 400b.

Therefore, the cooler jacket 410 can surround the outer periphery of the motor 400, thereby lowering the heat radiated from the motor 400, thereby improving the durability of the rotary table 1000.

Referring to FIG. 5, a plurality of T-grooves 110 may be formed on the upper surface of the first table 100 as a grid.

The first table 100 is formed with a plurality of T-grooves 110 on the upper surface thereof so that the jig and the jig can be easily mounted and precisely moved.

In other words, the rotary table 1000 using the direct-coupled motor 400 (DD motor) according to the present invention is applicable to a flexible production system since the table can be stacked up and down to be removable so that various workpieces can be easily mounted Since the high torque DD motor 400 is provided, it is possible to cope with a machining load without a separate brake device, thereby reducing the cost.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Therefore, it is to be understood that the subject matter of the present invention is not limited to the described embodiments, and all of the equivalents or equivalents of the claims are included in the scope of the present invention will be.

100: first table 200: second table
300: shaft 400: motor
500: Encoder 1000: Rotary table
110: T-groove 330: Inside of shaft
400a: rotor 400b: stator
410: cooler jacket 411: o-ring
510: Encoder cover
10: first bearing 20: second bearing
30: third bearing 40: first bearing housing
50: second bearing housing 60: third bearing housing
70: Rotary table housing 71: Entrance
72: Exit

Claims (6)

A first table 100 on which a plurality of T-grooves 110 for mounting a workpiece are formed in a grid, and which are rotatable;
A second table 200 bolted to the lower portion of the first table 100 and detachable from the first table 100;
A shaft 300 connected to a lower portion of the first table 100 and the second table 200 so as to rotate;
A motor 400 provided at the outer periphery of the shaft 300 to rotate the shaft 300; And
And an encoder 500 provided below the motor 400 and controlling the phases of the first table 100 and the second table 200. The direct coupled motor 400 A rotary table 1000 using a motor.
The apparatus of claim 1, wherein the first table (100)
And a plurality of T-grooves (110) are formed on the upper surface of the rotary table (1000) using a direct-coupled motor (400) (DD motor).
2. The apparatus of claim 1, wherein the upper and lower portions of the shaft (300)
A rotary table (1000) using a direct-coupled motor (400) (DD motor) having a first bearing (10) and a second bearing (20).
2. The apparatus of claim 1, wherein the shaft (300)
A rotary table (1000) using a direct-coupled type motor (400) (DD motor) having an internal hollow shape.
The motor control apparatus according to claim 1, wherein the motor (400)
A rotary table (1000) using a direct-coupled motor (400) (DD motor) in which a direct-coupled type motor (400) (DD motor) is used.
The motor according to claim 1, wherein the outer periphery of the motor (400)
A rotary table (1000) using a direct-coupled motor (400) (DD motor) having an annular cooler jacket (410).
KR1020150110897A 2015-08-06 2015-08-06 Rotary table using the direct driver motor KR101633741B1 (en)

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KR1020150110897A KR101633741B1 (en) 2015-08-06 2015-08-06 Rotary table using the direct driver motor

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Application Number Priority Date Filing Date Title
KR1020150110897A KR101633741B1 (en) 2015-08-06 2015-08-06 Rotary table using the direct driver motor

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KR101633741B1 true KR101633741B1 (en) 2016-06-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101897998B1 (en) * 2017-08-21 2018-10-29 이엠코리아주식회사 Apparatus for manufacturing tool post of machine tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000158261A (en) * 1998-11-27 2000-06-13 Murata Mfg Co Ltd Machining device
JP2006296046A (en) * 2005-04-07 2006-10-26 Ckd Corp Direct drive motor and rotating table device
JP2010214492A (en) * 2009-03-13 2010-09-30 Mori Seiki Co Ltd Indexing rotary table for machine tool
JP2013000830A (en) * 2011-06-15 2013-01-07 House Bm Co Ltd Fixing tool
KR101456304B1 (en) 2008-11-14 2014-11-04 두산인프라코어 주식회사 Drive device of Rotary table

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000158261A (en) * 1998-11-27 2000-06-13 Murata Mfg Co Ltd Machining device
JP2006296046A (en) * 2005-04-07 2006-10-26 Ckd Corp Direct drive motor and rotating table device
KR101456304B1 (en) 2008-11-14 2014-11-04 두산인프라코어 주식회사 Drive device of Rotary table
JP2010214492A (en) * 2009-03-13 2010-09-30 Mori Seiki Co Ltd Indexing rotary table for machine tool
JP2013000830A (en) * 2011-06-15 2013-01-07 House Bm Co Ltd Fixing tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101897998B1 (en) * 2017-08-21 2018-10-29 이엠코리아주식회사 Apparatus for manufacturing tool post of machine tool

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